package com.example.mobile2021606163crwplant0401;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;

import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {

    private TextView TV;
    private ImageView iv1;
    private Button btnnext;
    private int[] lines;
    private int linesID = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
        btnnext.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                lines = new int[6];
                lines[0] = R.drawable.line01_01;
                lines[1] = R.drawable.line01_02;
                lines[2] = R.drawable.line01_03;
                lines[3] = R.drawable.line01_04;
                lines[4] = R.drawable.line01_05;
                lines[5] = R.drawable.line01_06;
                iv1.setImageResource(lines[linesID + 1]);
                linesID += 1;
            }
        });
    }

    private void initView() {
        TV = (TextView) findViewById(R.id.TV);
        iv1 = (ImageView) findViewById(R.id.iv1);
        btnnext = (Button) findViewById(R.id.btnnext);
    }
}